Super Precision Ball Bearing 7907CYU/GLP4 Nachi Angular Ball Bearing Phenolic cage & Flush ground single unit 15 degrees Contact Angle Abec-7 35mm x 55mm x 10mm Made in Japan 7907CYU/GLP4 Nachi super precision Angular Ball Bearing with 15 degrees contact angle and Phenolic cage, bearing is ABEC-7 (P4) quality and made in Japan. 7907CYU/GLP4 inner diameter is 35mm, 7907CYU/GLP4 outer diameter is 55mm, 7907CYU/GLP4 width is 10mm.